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Title:
ENGINE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/150077
Kind Code:
A1
Abstract:
An engine control device that has: a turbocharger 4; an EGR device 26 that comprises an EGR passage 27, an EGR valve 29, and an EGR cooler 28; and a PCM 60 that, on the basis of the operation state of an engine 10, controls the EGR valve 29 so as to adjust an EGR rate that is the ratio of the amount of an EGR gas to the total amount of gas that is introduced to a cylinder of the engine 10. The PCM 60: controls the EGR valve 29 such that, in a high load range R11 for the engine, the EGR device 26 makes the EGR gas reflux into an intake passage 1; and, in operation ranges for the engine 10 in which the EGR device 26 makes the EGR gas reflux, controls the EGR valve 29 such that the EGR rate increases to the extent that engine speed increases at the same engine load.

Inventors:
MATSUMOTO, Tadasuke
AIGA, Shouichi
MATSUO, Yoshitomo
NISHIMURA, Kazuhiro
FUJIYAMA, Tomoaki
Application Number:
JP2017/004114
Publication Date:
September 08, 2017
Filing Date:
February 03, 2017
Export Citation:
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Assignee:
MAZDA MOTOR CORPORATION (3-1 Shinchi, Fuchu-cho Aki-gu, Hiroshima 70, 〒7308670, JP)
International Classes:
F02M26/05; F02D21/08; F02M26/22; F02M26/53
Domestic Patent References:
WO2014091717A12014-06-19
WO2015162779A12015-10-29
Foreign References:
JP2009149195A2009-07-09
JP2012163002A2012-08-30
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg. 123-1, Higashimachi, Chuo-ku, Kobe-sh, Hyogo 31, 〒6500031, JP)
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